(adsbygoogle = window.adsbygoogle || []).push({}); Finding the "shortest ladder"

Problem

I was given an analogy involving a ladder that goes over a fence and then leans against a wall a meter after the fence. The question wanted me to answer "what is theshortestladder that goes over the fence and reaches the wall"

3. The attempt at a solution

I worked out the equation of the "ladder" (i.e line from the ground to the wall) is:

(3sqrt(3) / sin x) + sec x

(where x is the angle the ladder makes with the ground and the wall)

How can i work out the "shortest" ladder that can be made to reach the wall. Is is simply the derivative of the ladder?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Finding the shortest ladder

**Physics Forums | Science Articles, Homework Help, Discussion**